11168007181 has 2 divisors, whose sum is σ = 11168007182. Its totient is φ = 11168007180.

The previous prime is 11168007173. The next prime is 11168007187. The reversal of 11168007181 is 18170086111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7240478281 + 3927528900 = 85091^2 + 62670^2 .

It is a cyclic number.

It is not a de Polignac number, because 11168007181 - 2³ = 11168007173 is a prime.

It is a super-2 number, since 2×11168007181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11168007187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5584003590 + 5584003591.

It is an arithmetic number, because the mean of its divisors is an integer number (5584003591).

Almost surely, 2^11168007181 is an apocalyptic number.

It is an amenable number.

11168007181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11168007181 is an equidigital number, since it uses as much as digits as its factorization.

11168007181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 34.

The spelling of 11168007181 in words is "eleven billion, one hundred sixty-eight million, seven thousand, one hundred eighty-one".